Luminescence excitation in an irradiated solid: type IIb diamond

K. P. O'Donnell, G. Davies

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Excitation spectroscopy is a useful technique for unrevealing absorption spectra of defects in solids. However, excitation spectra obtained using an absorbing sample will suffer distortion through limitation of the excitation intensity in the body of the sample. We use a simple analytical description of light absorption in solids to obtain corrected excitation spectra of the dominant luminescent defects in electron-irradiated type IIb diamond. It is thereby possible to make a clear separation of absorption due to different species of defects in this material. We obtain the first reliable estimates of band-shape parameters (moments of the transition probability) for the phonon-assisted sideband of the 'GRI' zero phonon line, and we obtain further experimental evidence concerning the nature of the 'GR2-8' lines, from the excitation spectrum. In addition, we establish by direct means the common origin of a number of absorption bands found in annealed material. The so-called 'TR bands' are reassigned to the di-interstitial on the basis of our identification of a localised phonon 'signature'. The absorption spectrum of irradiated type IIb diamond can now be understood as a superposition of absorptions due to a small number of distinct defect species.

LanguageEnglish
Pages177-188
Number of pages12
JournalJournal of Luminescence
Volume26
Issue number1-2
DOIs
Publication statusPublished - 1 Dec 1981

Fingerprint

Diamond
Luminescence
Phonons
diamonds
luminescence
Absorption spectra
Defects
excitation
defects
absorption spectra
Light absorption
electromagnetic absorption
sidebands
transition probabilities
Spectroscopy
interstitials
signatures
Electrons
Spectrum Analysis
moments

Keywords

  • excitation spectroscopy
  • adsorption spectra
  • diamond
  • TR bands

Cite this

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abstract = "Excitation spectroscopy is a useful technique for unrevealing absorption spectra of defects in solids. However, excitation spectra obtained using an absorbing sample will suffer distortion through limitation of the excitation intensity in the body of the sample. We use a simple analytical description of light absorption in solids to obtain corrected excitation spectra of the dominant luminescent defects in electron-irradiated type IIb diamond. It is thereby possible to make a clear separation of absorption due to different species of defects in this material. We obtain the first reliable estimates of band-shape parameters (moments of the transition probability) for the phonon-assisted sideband of the 'GRI' zero phonon line, and we obtain further experimental evidence concerning the nature of the 'GR2-8' lines, from the excitation spectrum. In addition, we establish by direct means the common origin of a number of absorption bands found in annealed material. The so-called 'TR bands' are reassigned to the di-interstitial on the basis of our identification of a localised phonon 'signature'. The absorption spectrum of irradiated type IIb diamond can now be understood as a superposition of absorptions due to a small number of distinct defect species.",
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Luminescence excitation in an irradiated solid : type IIb diamond. / O'Donnell, K. P.; Davies, G.

In: Journal of Luminescence, Vol. 26, No. 1-2, 01.12.1981, p. 177-188.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Luminescence excitation in an irradiated solid

T2 - Journal of Luminescence

AU - O'Donnell, K. P.

AU - Davies, G.

PY - 1981/12/1

Y1 - 1981/12/1

N2 - Excitation spectroscopy is a useful technique for unrevealing absorption spectra of defects in solids. However, excitation spectra obtained using an absorbing sample will suffer distortion through limitation of the excitation intensity in the body of the sample. We use a simple analytical description of light absorption in solids to obtain corrected excitation spectra of the dominant luminescent defects in electron-irradiated type IIb diamond. It is thereby possible to make a clear separation of absorption due to different species of defects in this material. We obtain the first reliable estimates of band-shape parameters (moments of the transition probability) for the phonon-assisted sideband of the 'GRI' zero phonon line, and we obtain further experimental evidence concerning the nature of the 'GR2-8' lines, from the excitation spectrum. In addition, we establish by direct means the common origin of a number of absorption bands found in annealed material. The so-called 'TR bands' are reassigned to the di-interstitial on the basis of our identification of a localised phonon 'signature'. The absorption spectrum of irradiated type IIb diamond can now be understood as a superposition of absorptions due to a small number of distinct defect species.

AB - Excitation spectroscopy is a useful technique for unrevealing absorption spectra of defects in solids. However, excitation spectra obtained using an absorbing sample will suffer distortion through limitation of the excitation intensity in the body of the sample. We use a simple analytical description of light absorption in solids to obtain corrected excitation spectra of the dominant luminescent defects in electron-irradiated type IIb diamond. It is thereby possible to make a clear separation of absorption due to different species of defects in this material. We obtain the first reliable estimates of band-shape parameters (moments of the transition probability) for the phonon-assisted sideband of the 'GRI' zero phonon line, and we obtain further experimental evidence concerning the nature of the 'GR2-8' lines, from the excitation spectrum. In addition, we establish by direct means the common origin of a number of absorption bands found in annealed material. The so-called 'TR bands' are reassigned to the di-interstitial on the basis of our identification of a localised phonon 'signature'. The absorption spectrum of irradiated type IIb diamond can now be understood as a superposition of absorptions due to a small number of distinct defect species.

KW - excitation spectroscopy

KW - adsorption spectra

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KW - TR bands

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